Bug 44979 - [4.6 regression] Revision 162270 failed many x86-64 tests
Summary: [4.6 regression] Revision 162270 failed many x86-64 tests
Status: RESOLVED FIXED
Alias: None
Product: gcc
Classification: Unclassified
Component: rtl-optimization (show other bugs)
Version: 4.6.0
: P3 normal
Target Milestone: 4.6.0
Assignee: Not yet assigned to anyone
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-07-18 18:06 UTC by H.J. Lu
Modified: 2010-07-22 19:33 UTC (History)
4 users (show)

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Known to fail:
Last reconfirmed:

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Description H.J. Lu 2010-07-18 18:06:15 UTC 
On Linux/x86-64, revision 162270:

http://gcc.gnu.org/ml/gcc-cvs/2010-07/msg00624.html

caused:

FAIL: gcc.c-torture/execute/nest-stdar-1.c execution,  -O3 -fomit-frame-pointer
FAIL: gcc.c-torture/execute/nest-stdar-1.c execution,  -O3 -g
FAIL: gcc.c-torture/execute/pr44575.c execution,  -O1
FAIL: gcc.c-torture/execute/pr44575.c execution,  -O2
FAIL: gcc.c-torture/execute/pr44575.c execution,  -O2 -flto
FAIL: gcc.c-torture/execute/pr44575.c execution,  -O2 -fwhopr
FAIL: gcc.c-torture/execute/pr44575.c execution,  -O3 -fomit-frame-pointer
FAIL: gcc.c-torture/execute/pr44575.c execution,  -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions
FAIL: gcc.c-torture/execute/pr44575.c execution,  -O3 -fomit-frame-pointer
-funroll-loops
FAIL: gcc.c-torture/execute/pr44575.c execution,  -O3 -g
FAIL: gcc.c-torture/execute/pr44575.c execution,  -Os
FAIL: gcc.c-torture/execute/stdarg-1.c execution,  -O3 -fomit-frame-pointer
FAIL: gcc.c-torture/execute/stdarg-1.c execution,  -O3 -g
FAIL: gcc.c-torture/execute/stdarg-3.c execution,  -O1
FAIL: gcc.c-torture/execute/stdarg-3.c execution,  -O2
FAIL: gcc.c-torture/execute/stdarg-3.c execution,  -O2 -flto
FAIL: gcc.c-torture/execute/stdarg-3.c execution,  -O2 -fwhopr
FAIL: gcc.c-torture/execute/stdarg-3.c execution,  -O3 -fomit-frame-pointer
FAIL: gcc.c-torture/execute/stdarg-3.c execution,  -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions
FAIL: gcc.c-torture/execute/stdarg-3.c execution,  -O3 -fomit-frame-pointer
-funroll-loops
FAIL: gcc.c-torture/execute/stdarg-3.c execution,  -O3 -g
FAIL: gcc.c-torture/execute/stdarg-3.c execution,  -Os
FAIL: gcc.c-torture/execute/stdarg-4.c execution,  -O1
FAIL: gcc.c-torture/execute/stdarg-4.c execution,  -O2
FAIL: gcc.c-torture/execute/stdarg-4.c execution,  -O2 -flto
FAIL: gcc.c-torture/execute/stdarg-4.c execution,  -O2 -fwhopr
FAIL: gcc.c-torture/execute/stdarg-4.c execution,  -O3 -fomit-frame-pointer
FAIL: gcc.c-torture/execute/stdarg-4.c execution,  -O3 -g
FAIL: gcc.c-torture/execute/stdarg-4.c execution,  -Os
FAIL: gcc.c-torture/execute/va-arg-26.c execution,  -O3 -fomit-frame-pointer
FAIL: gcc.c-torture/execute/va-arg-26.c execution,  -O3 -g
FAIL: gcc.target/i386/amd64-abi-5.c execution test
FAIL: gcc.target/i386/vararg-3.c execution test
FAIL: gcc.target/i386/vararg-7.c execution test
Comment 1 H.J. Lu 2010-07-19 13:19:28 UTC 
According to

http://gcc.gnu.org/ml/gcc-patches/2010-07/msg01409.html

this is an x86 backend bug.
Comment 2 Jack Howarth 2010-07-19 13:43:31 UTC 
The proposed patch in http://gcc.gnu.org/ml/gcc-patches/2010-07/msg01409.html shifts the bootstrap failure on x86_64-apple-darwin10 to...


libtool: compile:  /Users/howarth/darwin_objdir/./gcc/xgcc -B/Users/howarth/darwin_objdir/./gcc/ -B/Users/howarth/dist/x86_64-apple-darwin10.4.0/bin/ -B/Users/howarth/dist/x86_64-apple-darwin10.4.0/lib/ -isystem /Users/howarth/dist/x86_64-apple-darwin10.4.0/include -isystem /Users/howarth/dist/x86_64-apple-darwin10.4.0/sys-include -DHAVE_CONFIG_H -I. -I../../../gcc/libgomp -I../../../gcc/libgomp/config/bsd -I../../../gcc/libgomp/config/posix -I../../../gcc/libgomp -Wall -pthread -Werror -g -O2 -MT barrier.lo -MD -MP -MF .deps/barrier.Tpo -c ../../../gcc/libgomp/barrier.c -o barrier.o >/dev/null 2>&1
../../../gcc/libgomp/error.c: In function ‘gomp_error’:
../../../gcc/libgomp/error.c:54:1: error: unrecognizable insn:
(insn 32 31 11 2 ../../../gcc/libgomp/error.c:48 (parallel [
            (set (mem/c:BLK (plus:DI (reg/f:DI 6 bp)
                        (const_int -128 [0xffffffffffffff80])) [0 A64])
                (unspec:BLK [
                        (reg:DI 21 xmm0)
                        (reg:DI 22 xmm1)
                        (reg:DI 23 xmm2)
                        (reg:DI 24 xmm3)
                        (reg:DI 25 xmm4)
                        (reg:DI 26 xmm5)
                        (reg:DI 27 xmm6)
                        (reg:DI 28 xmm7)
                    ] UNSPEC_SSE_PROLOGUE_SAVE_LOW))
            (use (reg:DI 0 ax [58]))
            (use (const_int 0 [0]))
            (use (label_ref:DI 0))
            (use (const_int 4 [0x4]))
        ]) -1 (nil))
../../../gcc/libgomp/error.c:54:1: internal compiler error: in extract_insn, at recog.c:2127
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[5]: *** [error.lo] Error 1
make[5]: *** Waiting for unfinished jobs....
Comment 3 H.J. Lu 2010-07-22 19:33:33 UTC 
Fixed as of revision 162396.